What was the main way in which industrial age inventors farmers? by developing new techniques for growing crops by removing harmful bacteria from the soil by using radiation to control farm pests by improving farmers' working conditions?

Which of these statements describes a long-term impact of european imperialism in africa? a. african countries joined together to present a united front against imperialism. b. europeans paid african countries after colonizing them, offering these new countries a fresh start. c. european powers drew the current borders, splitting ethnic groups among modern countries. d. africans became more loyal to their countries than to their ethnic groups.